Window sash latch



DEC. 26, 1933. CHANSON 1,941,031

WINDOW SASH LATCH Filed March 14, 1953 i". imi; man

HIS ATTORNEYS Patented Dec. 26, 1933 rare-nr orifice This invention relates vto certain novel improvements in window sash latches.

' An object of4V this invention is to provide a new, simple, and relatively linezzpensive device for latching storm-or other window sashes in place.

The most'comrnon latch n owin usev forithis purpose consistsl of a'v button, usually rotatablyV `mounted upon the easement, and turned, after the'sash is inplace; so that a portion of the but- .'G' ton projects over the sash to hold the saine in place. These latch buttons are usually left 'exposed to the weather and often rust in place so that they become hard to turn. Moreover, they must, of necessity, be used onl the outside of the sash and hence necessitate a ladder or other arrangement for placing the sash.

Another object of the presentV invention is, therefore, to provide an improved latching unit 1 `for storm windows which in use will not be subject to the'aforementioned objectionable features of the most commonly used prior art latch unit and which in'use may be manipulated from either the inside or the outside of the easement to latch the sash in place.

Other objects will appear hereinafter,

The invention consists in the novel combination and arrangementof parts to be hereinafter described and claimed.

The invention will be best understood by ref` erence to the accompanying drawing, showing .the preferred form of construction and in which: Fig. 1 is an elevational view of a sash and Casement showing four of the new latch units v d in position to hold the sash in place; A Fig. 2 is a sectional View Lon line 2 2 lin Fig. 1;

Fig. 3 is a sectional view on line3-3 in Fig. l2; Fig. 4 is a sectional view on line 4-4 in Fig. 2; and

Fig. 5 is a perspective detached detail View of cludes a latch bolt or screw 14'having an' end portion or piercing point 16 and a shank 15. rpThe shank or stem 15 is non-circular in cross 56' section and is disposed in a corresponding slot 17 that extends axially or transversely through a cylindrical disc 18 for progressive turning and.

traveling movement therein. These discs 18 are designed for rotation in cylindrical recesses 19 formed in the stiles 12 of the lsash 11 in a manner to be presently'understood. Formed on the circumferential'periphery of each of these discs 13 and spaced radially therearound is a series of tool slots or kerfs 20 which extend transversely or axially of the discs 18. l 60 InVV assembling ther latchunits the threaded stem 16 of cach latch bolt or screw 14 `isthreadredly projected through an aperture 21 formed at the center of a closure cap 22; thesercaps 22 and Aboss 22 therefor being attached to the 65 stiles 12 to close andv weatherproof the outer endsof the recesses 19, as at 23. Opening out of theA stiles 12 from each of the recesses 19 is a slot 24; these slots 24 being normally closed and weatherproofed by closure caps 25 that are 70- .pivotally mounted on the stiles 12 as at 26.

The slots 24 are for the purpose ofpermitting access of a tool, such, for example, as a screw driver, kor nail to the tool slots '20 of the discs 18. These slots 24 may open either onto the 75 outer or inner kside of the stiles 12, so that the sash 11 may be latched in place from either the outer side' of the easement and building or from. theinner sideA of the Casement and building, This fact-is a material advantage since by in 80 stalling the sash from the inner side of the building the necessity of a ladder or the like is eliminated. Moreover, the slots 20 may be either rectangular in shape, as shown, for the recep- Y ltion of a screw driver or flat pointed nail or they may be cylindrical in shape for the reception of the pointof a common nail.

By successively opening the closure caps 2,5 a tool may be projected through each of the slots 24 successively ontothe tool slots 20,to rotate the 90 discs 18 and feed the screws 14 (counterclockwise as seen looking from right to left in Fig. y5); w thereby projecting the piercing points 16 of the latch bolts or screws into latching engagementY with the Casement 10,'and thus securingthe sash 95k 11 in place in the casernent. The engagement of the Vlatch bolts or screws 14 with the caps 22 and rbosses 22 will facilitate the disposing 'of the same in alignment with the passages 23,' aligned with the axial centers of the recesses19 whereby 100 the discs 18 carried by the screws 14 will be supreverse feed and remove the piercing points 16 110 from latching engagement with the easement 10 and thus release the sash.

Thus the new latch unit 13 eliminates the now commonly used latch buttons and the aforementioned objectionable features'of the latter and enables the sash to be placed in the Casement from either the inside or outside of the building.

While I have illustrated and described the preerred form of construction for carrying my invention into effect, this is capable of variation and modiiication, Without departing from the spirit of the invention. I, therefore, do not Wish to be limited to the precise details of construction set forth, but desire to avail myself of such varia'- tions and modifications as come Within the scope of 'the appended claims.

Having thus described my invention what I claim as new and desire to protect by Letters Patent is:

l. A Window sash latch comprising a cylindrical disc adapted to be rotatably mounted in a recess in a vertical stile of the sash and having a series of tool-receiving slots formed in its circurnferential periphery and arranged at radial intervals therearound, and a latch screw carried by the disc having a piercing point for projection laterally from the stile into the adjoining Casement, said screw being operated by rotation of said disc.

2. A window sash latch comprising a cy1indrical disc adapted to be rotatably mounted in a recess in a vertical stile of the sash and having a series of tool-receiving slots formed in its circumferential periphery and arranged at radial intervals therearound, a closure cap for the recess having a threaded aperture, and a latch bolt carried by the disc having an end portion threadedly engaged within the aperture of the closure plate for projection laterally from the stile into latching engagement with the adjoining casement, said bolt being operated by rotation of said disc.

3. A window sash latch comprising a cylindrical disc rotatably mounted in a recess in a vertical stile of the sash and having a series of tool receiving slots formed in its circumferential periphery and arranged at radial intervals therearound, a closure cap for the recess having a boss projecting Within the latter and having a threaded aperture axially aligned throughthe center of the cap, and a latch bolt carried by and slidably connected with the disc having an end portion threadedly engaged with the boss and closure plate for projection from the stile into latching engagement with the joining Casement, said bolt being operated by rotation of said disc.

EMIL J OHANSON.

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